Abstract:
Disclosed is a fiber reinforced plastic wire used as the overhead transmission cable. The fiber reinforced plastic wire for a strength member of an overhead transmission cable according to the present invention includes a wire having a predetermined diameter and composed of thermoset matrix resin; and a plurality of high strength fibers dispersed parallel to a longitudinal direction in an inside of the wire, the high strength fibers being surface-treated with a coupling agent to improve interfacial adhesion to the matrix resin. The fiber reinforced plastic wire of the present invention has the high tensile strength at the room temperature and the high temperature since its high strength fiber is surface-treated with a coupling agent. The fiber reinforced plastic wire can be also effectively used as the strength member in the overhead transmission cable since it has the excellent low coefficient of thermal expansion, etc. and is light-weight.
Abstract:
Disclosed are a polypropylene-based flame-retardant insulating resin composition and an insulating cable equipped with an insulation layer formed using the same. The insulating resin composition comprises a polypropylene resin, and 50 to 200 parts by weight of an inorganic flame-retardant based on 100 parts by weight of the polypropylene resin. The insulating resin composition has the controlled polarity and hydrophilicity of the flame-retardant or the optimized particle distribution of the flame-retardant, and consequently uniform dispersion of the flame-retardant and maxim compatibility with the resin. Thus, the composition has the improved properties as an insulating material of an electric cable.
Abstract:
The present invention relates to a method for continuous manufacture of a gas hydrate using potential hydrate crystals. More specifically, the present invention relates to a method for continuous manufacture of a gas hydrate comprising: an eleventh step for injecting potential hydrate crystals in a surfactant-containing aqueous solution into a pipe-shaped reactor; a twelfth step for producing gas hydrates by injecting a gas into the pipe-shaped reactor into which potential hydrate crystals have been injected in the eleventh step; and the thirteenth step for maximizing a conversion rate by transporting, in a circular motion, the gas hydrates produced in the twelfth step through the entire length of the interior of the pipe-shaped reactor. In the present invention, the thirteenth step comprises transporting the gas hydrates in the pipe-shaped reactor in a circular motion by the actions of pig-balls, which are connected to each other at predetermined intervals moving in a circular motion inside the pipe-shaped reactor. By abandoning the conventional method of dehydrating after generating a gas hydrate slurry, and adopting the continuous manufacture of a gas hydrate without a dehydration process, the device for continuous manufacture of a gas hydrate in the present invention avoids, from the beginning, a problem of additionally requiring a device for washing a strainer or a filter, as well as a difficulty posed for mass production for commercialization due to an increase in equipment size necessitated by allowing the dehydration process to occur inside the reactor.
Abstract:
The present invention relates to a method for continuous manufacture of a gas hydrate using potential hydrate crystals. More specifically, the present invention relates to a method for continuous manufacture of a gas hydrate comprising: an eleventh step for injecting potential hydrate crystals in a surfactant-containing aqueous solution into a pipe-shaped reactor; a twelfth step for producing gas hydrates by injecting a gas into the pipe-shaped reactor into which potential hydrate crystals have been injected in the eleventh step; and the thirteenth step for maximizing a conversion rate by transporting, in a circular motion, the gas hydrates produced in the twelfth step through the entire length of the interior of the pipe-shaped reactor. In the present invention, the thirteenth step comprises transporting the gas hydrates in the pipe-shaped reactor in a circular motion by the actions of pig-balls, which are connected to each other at predetermined intervals moving in a circular motion inside the pipe-shaped reactor. By abandoning the conventional method of dehydrating after generating a gas hydrate slurry, and adopting the continuous manufacture of a gas hydrate without a dehydration process, the device for continuous manufacture of a gas hydrate in the present invention avoids, from the beginning, a problem of additionally requiring a device for washing a strainer or a filter, as well as a difficulty posed for mass production for commercialization due to an increase in equipment size necessitated by allowing the dehydration process to occur inside the reactor.
Abstract:
The present invention relates to a device for continuous manufacture of a gas hydrate using potential hydrate crystals. More specifically, the present invention relates to a device for continuous manufacture of a gas hydrate comprising: a pipe-shaped ice machine for injecting potential hydrate crystals in a surfactant-containing aqueous solution into a pipe-shaped reactor; and the pipe-shaped reactor, a reactor shaped like a long pipe, for generating gas crystals by inducing a reaction between the injected potential hydrate crystals and a gas, and transporting the generated gas crystals in a circular motion through the entire length of the interior of the reactor, thereby maximizing a rate of conversion. In the present invention, the pipe-shaped reactor is provided with pig-balls, which are connected to each other at predetermined intervals, and move in a circular motion inside the pipe-shaped reactor, thereby transporting, in a circular motion, the gas hydrate inside the pipe-shaped reactor. By abandoning the conventional method of dehydrating after generating a gas hydrate slurry, and adopting the continuous manufacture of a gas hydrate without a dehydration process, the device for continuous manufacture of a gas hydrate in the present invention avoids, from the beginning, a problem of additionally requiring a device for washing a strainer or a filter, as well as a difficulty posed for mass production for commercialization due to an increase in equipment size necessitated by allowing the dehydration process to occur inside the reactor.
Abstract:
The present invention relates to a device for continuous manufacture of a gas hydrate using potential hydrate crystals. More specifically, the present invention relates to a device for continuous manufacture of a gas hydrate comprising: a pipe-shaped ice machine for injecting potential hydrate crystals in a surfactant-containing aqueous solution into a pipe-shaped reactor; and the pipe-shaped reactor, a reactor shaped like a long pipe, for generating gas crystals by inducing a reaction between the injected potential hydrate crystals and a gas, and transporting the generated gas crystals in a circular motion through the entire length of the interior of the reactor, thereby maximizing a rate of conversion. In the present invention, the pipe-shaped reactor is provided with pig-balls, which are connected to each other at predetermined intervals, and move in a circular motion inside the pipe-shaped reactor, thereby transporting, in a circular motion, the gas hydrate inside the pipe-shaped reactor. By abandoning the conventional method of dehydrating after generating a gas hydrate slurry, and adopting the continuous manufacture of a gas hydrate without a dehydration process, the device for continuous manufacture of a gas hydrate in the present invention avoids, from the beginning, a problem of additionally requiring a device for washing a strainer or a filter, as well as a difficulty posed for mass production for commercialization due to an increase in equipment size necessitated by allowing the dehydration process to occur inside the reactor.